A: “L” stands for luminance, and it is a clear filter, which, at first glance, may sound confusing. Do CCD manufacturers insist on putting a clear filter in among the red, green, and blue so that they ...
Photographing the planets has long been a mainstay of both amateur and professional astronomers. It wasn’t so long ago that images from Voyager were wowing astronomers and scientists while amateurs ...
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